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本卡头主要用于组合机床,其上有安全离合器。离合器传递扭矩的大小,可以根据丝锥强度进行调整。本卡头的外径尺寸小,可以用几个卡头同时进行近距离孔的攻丝。卡头的结构是封闭的,可以防止其内部机构在工作时受到污染,以保证它比较精确并耐用。卡头最突出的优点还在于:对几个深度不同的不通孔进行攻丝时,整个主轴箱只用一个控制凸轮。 卡头的结构如图所示。 卡头有套筒形的体1,体1上做有两台阶的不通孔,孔中装有可轴向滑动的丝锥衬套2和滑块3,它们由有外螺纹的调整环4保持在体1中,而4的端面5支承在丝锥衬套2的台肩6上。
The chuck is mainly used in combination machine, which has a safety clutch. Clutch torque transmission size, can be adjusted according to tap strength. The outer diameter of the chuck size is small, you can use a few chuck at the same time close the hole tapping. The structure of the chuck is closed, to prevent its internal mechanism from being polluted at work to ensure that it is more accurate and durable. The most prominent advantage of the chuck is still: the number of different depth of the hole without tapping, the entire headstock with only one control cam. The structure of the card as shown. The chuck has a sleeve-shaped body 1, there are two steps of non-through holes on the body 1, the bore is equipped with a sliding sleeve 2 and a slider 3 can slide axially, which are held by the externally threaded adjustment ring 4 Body 1, while the end face 4 of 4 is supported on the shoulder 6 of the tap bushing 2.